#include <iostream>
#include <queue>
#include <map>
#include <unordered_map>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>
#include <cstring>
#include <set>
#include <unordered_set>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
int main()
{
	int t;
	cin>>t;
	while(t--)
	{
		int x,y;
		cin>>x>>y;
		if(x==1 || y==1)
		{
			cout<<1<<endl;
			cout<<x<<' '<<y;
		}
		else
		{
			cout<<2<<endl;
			cout<<x-1<<' '<<1<<endl;
			cout<<x<<' '<<y;
		}
		cout<<endl;
	}

	return 0;
}

